Zentyal (formerly eBox Platform) is a small business server that offers small and medium businesses an affordable and easy-to-use enterprise-level computer network. It can act as a Gateway, Infrastructure Manager, Unified Threat Manager, Office Server, Unified Communication Server, or a combination of these.
The ZideStore server is a native client integration server for OpenGroupware.org. Users can access the contact, appointment, and task database using Outlook, Evolution, and almost any iCalendar compatible client (such as Apple iCal or Mozilla Calendar). In addition, ZideStore supports WebDAV to make the OGo document stores accessible for MS Office and OpenOffice.org.
Zimbra is a next-generation enterprise messaging and collaboration system. It features an Ajax Web client with conversation views, fast email search, Web service mash-ups, shared calendars, document authoring, and IM. The server also syncs to MS Outlook (via MAPI), the Apple desktop (via iSync, iCal, and CalDAV), POP/IMAP clients, and mobile devices (BlackBerry, smart phones, HTML Web browsers). A version of the Web client, Zimbra Desktop, also works offline with any POP/IMAP server. Administrators can control live backup/restores of individual or groups of mailboxes, hierarchical storage (HSM) and clustering, LDAP directory configuration, Web services integration with existing enterprise applications, and integrated anti-spam and anti-virus.
Zoho Virtual Office provides a virtual collaboration platform with which individuals and groups can communicate, collaborate, organize, and share information seamlessly. The collaboration suite includes email, documents, calendar, tasks, contacts, notes, links, IM, and more. Zoho Virtual Office allows users to create multiple groups and provides smooth collaboration of these components within groups. All data in the system can be accessed from any computer that has an Internet connection and a Web browser.